SKU: 35354283640

Holley EFI 550-869K Sniper EFI Quadrajet Master Kit

Sale price$944.97 Regular price$1049.97
Save 10%

Pay in installments of $262.49 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 30 - Aug 4

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Holley EFI 550-869K Sniper EFI Quadrajet Master KitOverview: Are you tired of rebuilding the 50+ year old Rochester Quadrajet (Q Jet) on your classic Chevrolet, GMC, Buick, Oldsmobile, or Pontiac? Introducing Sniper EFI Quadrajet. The first bolt on spread bore electronic fuel injected throttle body system that does not require any additional adapters, sealing plates, or intake manifold swaps! The Sniper EFI Rochester Quadrajet (Q Jet) system retains the same great features as the 4150 Sniper EFI

Overview:

Are you tired of rebuilding the 50+ year old Rochester Quadrajet™ (Q-Jet) on your classic Chevrolet, GMC, Buick, Oldsmobile, or Pontiac? Introducing Sniper EFI Quadrajet™. The first bolt on spread bore electronic fuel injected throttle body system that does not require any additional adapters, sealing plates, or intake manifold swaps! The Sniper EFI Rochester Quadrajet™ (Q-Jet) system retains the same great features as the 4150 Sniper EFI version such as; four 100lb/hr Injectors, built in timing control, a 3.5" full color touchscreen and much more! The throttle body will support up to 500 horsepower naturally aspirated. In addition to all of these great tried and true features, the Sniper EFI Rochester Quadrajet™ (Q-Jet) system will fit most stock air cleaners and offers multiple fuel inlet configurations that allow for a stock appearing installation!

Features:

  • Designed to deliver the signature Rochester Roar at Wide Open Throttle!
  • Throttle body mounted ECU - no extra boxes to mount
  • Supports up to 500hp with Four 100 Lb/Hr Injectors!
  • Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)
  • Integrated ignition timing control
  • Transmission provisions on throttle lever for TH350/TH400 and 200R4/700R4
  • Fits most stock Rochester Quadrajet (Q-Jet) air cleaners
  • Brake Booster adapter included, if required
  • Universal Throttle and transmission kickdown bracket included
  • High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays.
  • Simple Calibration Wizard (Answer a few questions about your engine and it creates the base map, then starts tuning on its own!) - NO laptop required!
  • Complete fuel system includes - external fuel pressure regulator preset to 58.5psi, 20ft of 3/8" Vapor Guard Fuel Hose, Fuel Pump, Filters, necessary hardware and bulkhead fitting to return fuel into the tank!
  • Self-tuning ECU means you don't have to be a computer/tuning wiz to have EFI!
  • The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides realtime Fuel Map Learn!
  • OEM Style Throttle Position Senser (TPS)/ and Idle Air Control (IAC) for years of dependable service.
  • Included clamp-on oxygen sensor kit ensures a leak free oxygen sensor installation, with Stainless Steel T-Bolt clamps and a Stainless Steel (Weldable) oxygen sensor flange
  • Patent Pending

 

Application:

Year Make Model Submodel Engine Size
Universal

 

Specs:

Brand Holley Sniper EFI
CFM 715
Coast Guard Approved Yes
Emission Code 3
Finish Classic Gold
Flange Style Spreadbore
Fuel Pressure 58.5 PSI
Height 3.28"
Injector Size 100 lb/hr @ 58.5 PSI
Inlet / Outlet Size 9/16-18 Female O-Ring (AN 6)
MAP Sensor 2Bar
Max Horsepower Rating 500 Naturally Aspirated
Product Type Sniper 4BBL TBI Kits
Throttle Bore 1.375 Primary / 2.00 Secondary
Transmission 700R4/200R4
Warning California Proposition 65
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 35354283640

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.1 ★★★★★
Based on 8 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
J
Verified Purchase
Jessie A.
Omaha, US
★★★★★ 5
Great quality at a great price range!
Color: Navy Blue
Works very well for the day to day. Great quality at a great price range. Would definitely buy again if needed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
A
Verified Purchase
Allana W
Lake Worth, US
★★★★★ 5
Solid case.
Color: Sky-Blue
Love this case. Fits great and the color is great! The keyboard is nice and it even has a little spot for a stylist.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2026
N
Verified Purchase
Nosiest
Natrona Heights, US
★★★★★ 4
Cheap and good
Color: Black, Color: Black
I chose the color black and it gives a really nice look, especially with the multicolor led lights around the keys. It is very easy to clean and you can shut off the keyboard to prevent any mess with the iPad. The magnet is very nice and keeps the keyboard in place. The keyboard doesn’t easily slip or anything so it holds the iPad very well. Only bad thing is that over time the iPad begins to scrape off the pain and it leaves your keyboard with some white spots all over :/ but if looks isn’t something that you care about, this is the keyboard for you. Don’t use it for gaming because there is a delay in functionality when you press a key and then try to use the pad. Also, you have to press the keys a bit harder than the usual keyboard. But for the price? This is a great item! Definitely worth my money
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 18, 2026
G
Verified Purchase
Grant In Austin
West Palm Beach, US
★★★★★ 5
Great quality at a remarkable price
Color: Navy Blue
I got an iPad and was looking for a cover to protect it. I came across this case that has a Bluetooth keyboard. It seems to be working great. It was less than $30 and had 4.5 stars with over 4k reviews. The keyboard is magnetic and detachable, so I’ve got lots of configuration options. The keyboard pairs easily and allows you to use the iPad like a laptop. The point of an iPad a lot in one shot is kind of the touchscreen, but when I’m typing a lot of text as once (like now), it’s really nice to have a physical keyboard and touchpad. The keys are comfortably spaced and I’m comfortable typing on it. There is no additional setup for the keyboard besides pairing it to the iPad. At that point, all the cursor and keyboard features are immediately available. The case is well built and has nice features like a slot to hold a stylus and multiple grooves to set your viewing angle. It’s configured to be used in landscape mode, but if for some reason you wanted to use it in portrait mode, you can pop the keyboard off to lay it flat. Especially for the price, this is an exceptionally nice iPad cover.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
M
Verified Purchase
MAAC
Draper, US
★★★★★ 5
💪🏼💪🏼🇺🇸🇺🇸🇺🇸
Color: Navy Blue
⭐️⭐️⭐️⭐️⭐️ Very high-quality product, ideal for all types of heavy-duty work. It feels strong, comfortable, and durable. It performs its function perfectly and exceeds expectations. I highly recommend it for its excellent performance and great value for the pr
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026

recommand products